Revert "Update test case name for new Stagefright test"

This reverts commit 03d333eecc43e5d38b00a90f890c3e3e29bf07de.

Change-Id: I53e5f12e037d96bd1e2ebf68481efcbd82902cca
diff --git a/tests/tests/security/src/android/security/cts/StagefrightTest.java b/tests/tests/security/src/android/security/cts/StagefrightTest.java
index bc4fe2e..856ce32 100644
--- a/tests/tests/security/src/android/security/cts/StagefrightTest.java
+++ b/tests/tests/security/src/android/security/cts/StagefrightTest.java
@@ -196,7 +196,7 @@
      ***********************************************************/
 
     @SecurityTest
-    public void testStagefright_bug_72165027() throws Exception {
+    public void testStagefright_b72165027() throws Exception {
         doStagefrightTest(R.raw.bug_72165027);
     }